Potential Vibrational Modes Tied to Diffuse Interstellar Bands
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arXiv
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| Autori principali: | , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| author | Majaess, Daniel Seuret, Halis Harriott, Tina A. Morera-Boado, Cercis Sullivan, Ailish Massa, Lou Matta, Chérif F. |
| author_facet | Majaess, Daniel Seuret, Halis Harriott, Tina A. Morera-Boado, Cercis Sullivan, Ailish Massa, Lou Matta, Chérif F. |
| contents | Potential vibrational modes associated with diffuse interstellar bands (DIBs) could be discerned by examining energy differences between correlated DIBs. Consequently, $\approx 10^3$ higher correlated DIB pairs ($r-σ_r \ge 0.8$, $\ge 12$ sightlines) were extracted from the Apache Point Observatory DIB catalog, and their energy spacings computed. In this first macro exploratory step, a histogram possibly reveals chemical bond signatures of C$\equiv$C, C$\equiv$N, S$-$H, C$-$O, C$=$O, Si$-$H, N$-$H, C$-$H (aliphatic), C$\mathbf{^{\underline{...}}}$C (in-ring), and aromatics (C$-$H stretch, C$\mathbf{^{\underline{...}}}$C in-ring, oop C$-$H bending, and overtones). Continued research is required to (in)validate the histogram approach, mitigate noise, scrutinize maxima, break degeneracies, and converge upon an optimal framework. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_15050 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Potential Vibrational Modes Tied to Diffuse Interstellar Bands Majaess, Daniel Seuret, Halis Harriott, Tina A. Morera-Boado, Cercis Sullivan, Ailish Massa, Lou Matta, Chérif F. Astrophysics of Galaxies Potential vibrational modes associated with diffuse interstellar bands (DIBs) could be discerned by examining energy differences between correlated DIBs. Consequently, $\approx 10^3$ higher correlated DIB pairs ($r-σ_r \ge 0.8$, $\ge 12$ sightlines) were extracted from the Apache Point Observatory DIB catalog, and their energy spacings computed. In this first macro exploratory step, a histogram possibly reveals chemical bond signatures of C$\equiv$C, C$\equiv$N, S$-$H, C$-$O, C$=$O, Si$-$H, N$-$H, C$-$H (aliphatic), C$\mathbf{^{\underline{...}}}$C (in-ring), and aromatics (C$-$H stretch, C$\mathbf{^{\underline{...}}}$C in-ring, oop C$-$H bending, and overtones). Continued research is required to (in)validate the histogram approach, mitigate noise, scrutinize maxima, break degeneracies, and converge upon an optimal framework. |
| title | Potential Vibrational Modes Tied to Diffuse Interstellar Bands |
| topic | Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2504.15050 |